Coffee brewer



June 13, 1939. C LZ 2,162,033

COFFEE BREWER Filed June 8, 1957 Etta] ];&.1 5 I 4 12 16 11 a4 41 m 36 .37 .25 39 13 13 2L 10 gwuc fl/tw 1 fleodaz'e escfiulje Patented June 13, 1939 .UNITED STATES PATENT OFFICE COFFEE BREWER Theodore Schulze, Cleveland, Ohio Application June 8, 1937, Serial No. 146,991

4 Claims.

This invention relates to coffee brewers and more especially to coffee brewers in which the coffee beans are ground and brewed.

The main object of the invention is to provide a coffee brewer, in which the coffee beans are ground under water and the ground coffee beans brewed in the same water for preventing loss of the volatile elements thereof and thereby retaining the full strength and flavor of the coffee brewed.

Another object of the invention is to provide a coffee brewer of the above character, which is of simple and practical construction consisting of a unit convenient to use and readily put into operation.

With the above and other objects in view, the invention will be hereinafter fully described with reference to the accompanying drawing, and the novel features thereof will be particularly pointed out in the appended claims.

In the drawing, Figure l is a sectional elevation of a coffee brewer constructed in accordance with my invention,

Fig. 2 is a cross-sectional view taken on line 2-2 of Fig. 1,

Fig. 3 is a plan view of the ring-grinding member,

Fig. 4 is an elevation thereof,

Fig. 5 is an elevation of the upper portion of the tubular chamber for receiving the coffee beans,

Fig. 6 is a plan view thereof, and

Fig. 7 is a plan view of one of the strainers.

Referring to the drawing, I represents a cylindrical casing having a closed bottom 2 and a removable cover 3. The cover is held closed by means of suitable clamps as 4. The casing I is supported by and above a base 5 by means of a plurality of legs 6. Fixed to the bottom 2 of the casing and central thereof is a tubular chamber 1 adapted to receive the coffee beans. The chamber 7 is supported at its upper end from the sides of the casing l by means of a plurality of radial arms 8 fixed thereto at 9 and carrying a collar Ill encircling said tubular chamber below its upper edge ll.

Arranged within the upper end of the tubular chamber 1 and projecting thereabove is a ringgrinding member I2 of a mill. The ring-grinding member i2 is removably fixed to the upper end of the tubular chamber 1 by means of suitably tapering lugs indicated by [3, which are adapted to pass first through vertical slots [4 of said tubular chamber and by giving said member a clock-wise rotary turn locking said lugs in horizontal slots I5 of said tubular chamber. Cooperating with the grinding member I2 is a grinding head l6, which is fixed to an upright shaft l'l, which passes through the bottom 2 of the casing and into a bearing I8 of the base 5. A suitable packing means I9 is provided for preventing leakage around the shaft H.

For driving the shaft ll, a gear 20 is fixed thereto, and a pinion 2| of a motor 22 is in mesh therewith. A platform 23 carried by the legs 6 supports the motor 22. In order to permit adjustment of the grinding head 16 of the mill vertically for satisfactory grinding, the shaft I"! is slidably mounted in an adjustably supported collar 24, which rests upon the top of the hearing l8 and may be fixed thereto at any desired position by means of a set-screw 25. The gear 20 is also adjustably fixed to the shaft I! by a set-screw 26.

Hot water is supplied to the brewer by means of a pipe 2'! arranged below the bottom 2 of the casing and leading into the-bottom of the tubular chamber 1 at 28. The pipe 2'! is connected to an electric heater 29, which is connected by a pipe 30 to the city water supply. A strainer 3| is provided at the inlet end of the pipe 21, and shutoff valves 32 and 33 at each side of the heater 29. The incoming hot water forces the coffee beans upwardly and into the mill to be ground.

For straining the water from the ground coffee beans upon leaving the mill, suitable strainers 34 and 35 are provided. Said strainers are of the same diameter as the inside of the casing, are supported upon brackets indicated by 36 and fixed to the casing, and are provided with central openings as 31 for fitting over or receiving the ring-grinding member l2. A suitable faucet 38 is provided for drawing off the completed brewed coffee. A gauge-glass 39 connecting a pipe 40 to the chamber 1 and a nipple M in the casing is adapted to show the height of the hot water in the casing.

In practice, the coffee beans are placed in the chamber 1 after removing the ring-grinding member 12 by first turning same counter-clockwise and lifting same out. Said ring-grinding member is replaced, also the strainers 34 and 35, and the cover 3 applied. The electric heater 29 is put into operation and the shut-01f valves 32 and 33 turned on. The incoming hot water through the strainer 3| carries the coffee beans up to the mill to be ground, and the water in which the coffee beans were ground and brewed passes downwardly through the strainers 34 and.

, faucet 38.

35 into the casing ready to be drawn off at the Having fully described my invention, what I claim 7 is r movable to permit the depositing of coffee beans in'said chamber.

casing, a vertical'chamber within the casing, the chamber having a closed lower end and an upper open end, a mill, the mill being removably hired in the open end of said chamber, means for admitting waterl'under pressure to the lower end therein to said mill, and means for 2. In a cofiee brewer, the combination of a5 of the chamber adapted to carrycofle'e beans driving said mill.

3. In a cofiee brewer, the combination of a casing, a vertical chamber in the casing, the

chamber having a" closed lower end and. an upper open end, a mill in said open end of said chamber, means for admitting water under pressure to the lower end of said chamber, means for driving said mill, and means for straining the ground coffee beans and water after leaving the mill and before entering the casing.

.4. Ina cofiee brewer, the combination of a casing, a vertical tube in the casing, the tube "havinga closed lower end and an open upper end, a mill, the mill being located in the open upper end of said tube, and a pipe leading through the closed lower end of the tube for admitting water thereto under pressure. 7

THEODORE SCHULZE; 2o 

